LP3981IMM-2.7/NOPB National Semiconductor, LP3981IMM-2.7/NOPB Datasheet - Page 8

• Manufacturer Part Number: LP3981IMM-2.7/NOPB
• Description: IC REG LDO 300MA 2.7V 8MSOP
• Manufacturer: National Semiconductor

Specifications of LP3981IMM-2.7/NOPB

• Regulator Topology: Positive Fixed
• Voltage - Output: 2.7V
• Voltage - Input: Up to 6V
• Voltage - Dropout (typical): 0.132V @ 300mA
• Number Of Regulators: 1
• Current - Output: 300mA
• Current - Limit (min): 300mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP3981IMM-2.7; LP3981IMM-2.7TR

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Typical Performance Characteristics
C
Application Hints
POWER DISSIPATION AND DEVICE OPERATION
The permissible power dissipation for any package is a
measure of the capability of the device to pass heat from the
power source, the junctions of the IC, to the ultimate heat
sink, the ambient environment. Thus, the power dissipation
is dependant on the ambient temperature and the thermal
resistance across the various interfaces between the die and
ambient air.
BP
= 0.033 µF, V
(V
(V
IN
IN
Line Transient Response
Line Transient Response
= V
= V
Enable Response (T
IN
= V
OUT
OUT
OUT
+ 1V to V
+ 1V to V
+ 0.5V, T
OUT
OUT
A
ON
= 25˚C, Enable pin is tied to V
+ 1.6V)
+ 1.6V)
)
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Unless otherwise specified, C
8
As stated in notes 3 and 5 in the electrical specifications
sections, the allowable power dissipation for the device in a
given package can be calculated using the equation:
With a θ
a value of 2.0W with a maximum junction temperature of
IN
. (Continued)
JA
= 50˚C/W, the device in theLLP package returns
(V
(V
IN
IN
Line Transient Response
Line Transient Response
= V
= V
Enable Response (T
OUT
OUT
+ 1V to V
+ 1V to V
IN
= C
OUT
OUT
OUT
= 2.2 µF Ceramic,
ON
+ 1.6V)
+ 1.6V)
)
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